Apparatus for electrically heating liquids



Sept. 25, 1928.

' G. BAUM APPARATUS FOR ELECTRICALLY HEATING LIQUIDS Original Filed 00th. 15, 1925 Patented Sept. 25,1928.

, u'm'rso STATES PATENT OFFICE. I

' ousrav mm, or wmssansram-onrnn-naam mamas, AUSTRIA, assrenoa T- rnn nmeam mac-mo CHEMICAL comm, me, or NEW some, n. z, a con- POB- ATION OF NEW Y 011K.-

APPARATUS FOR ELECTRIQAILY HEATING LIQUIDS.

Original application illed betober 18, 1985, Serial No. 6 2,603, and in Austria October 28, 1924. Divided and this application fled October 19, 1926. Serial No. 142,582.

The present invention relates to an apparatus for electrically heating liquids, w heating may be effected for an purpose and particularly for that of distil ation, concen- 6 tration, provocation of chemical. reactions and the like, the present application. being a division of the copending application Serial No. 62,603/1925 filed October 15,1925, which relates to the respective process.

Inheatingli uids'by means of'electrical energy and utilizing the" liquid itself as re-,

sistance it is known to place between thev electrodes insulating structures, which di-' vide the liquid into 1 its resistance. If the heating is to be carriedvout for the purpose of distillation or concentration or provocation of chemical reactions, the liquid undergoes in the course of its treatment continuous changes of its state and condition (temperature, chemical composition, de cc of concentration 'etc.),' owing to w ich alterations also its resistance changes. The

streams thus increasing present invention aims. at rendering the apparatus adapted for automatically accommodating the resistance to such alterations occurring in the course of the treatment of the liquid. This is according to the invention constituting the subject matter no of the above mentioned copending application obtained by employing structures of porous sucking material, which are pllunged or dipped into the electrolyte for t e purpose o sucking or absorbing therefrom the so liquid to be treated.

According to the this pur ose especial y shaped bodles are employe having the form'of rectangular frames, but with only three sides, the fourth 40 side being left 0 en. The two shanks or legs of this frame p unge or dip into the electrol to contained in two se arat'e' chambers of the liquid receptacle, w ilst the part-ponnectin the two le of the frame bridges overt e cross partition separating the said two chambers. I

If the liquid is conducted bya sucking 'or absorbing action throu h structures of this kind, the graduation o the supply and 60 of the division of the liquid according the chan of its state occurring therein during this treatment will be performed ich resent invention for 1 automatically, since the cross-section of the 7 kinds can be reduced, mixtures of liquids separated and reactions (saponification for instance) carried out, whereby, in every instance, the highest possible theoretical output not only of material but also of thermicefi'ect is nearly obtained. The process enables one likewise to efi'ect the highest possible energy and heat concentration respectively. I

In the accompanying drawing byway of example one type of an apparatus working in accordance with the invention is illustrated, which apparatus may e. g. be employed for obtaining pure sulphuric acid from technical (commercial) sulphuric acid. Fig. 1 shows a longitudinal sectional elevation thereof, Fig. 2 the plan view and Fig. 3 an end view. a 1 is a reservoirmade of earthenware orof some similar material. The reservoir is divided by a cross-partition 2 into two chambers 3. Each chamber is provided with a feed pipe 4 and with a discharge pipe 5 by means of which the liquid is kept at the same level in both'chambers.

The structure 6 made of porous material is shaped like a three sided open frame, the two sides of which dip into the electrolyte of the two chambers while the piece connectin the two sides of the frame bridges over t e chambers and is above the level of the liquid.

A hell 7 is placed over the inner structure which encloses the distillation chamber and 'is rovided at the top with, a discharge pipe 8 or the gases given out. The opening 9 v 'in the body of the bell serve to render possible the communications between the electrolytes in the distillation chamber and the The current is led in throu h the electrodes 10 which plunge outside t e bell in the electrolytes of the two chambers 3 reservoir.

The porous inner structures 6, which are made in sufiicient number (in Figure 2, three of them are shown) raise the electrolytes by suction or absorption from the chambers 3 into the piece of the frame bridging overthe chambers so that through this piece. an electric connection between the .two chambers is formed. The quantity of liquid present in the bridging piece decreases in the upward direction and the strength of the current and the heating increase to a corresponding amount in the same direction. At the culminating part of the bridge the heating reaches the distillation temperature and the vaporization therefore occurs at that part.

What I claim is:

1. An apparatus for heating liquids by electrical energy consisting of a liquid container made" of insulating material, structures with small interstitial spaces dipping into the liquid in the container and extending abovethe liquid level, and means for leading electric current through the liquid contained in the structures;

2. An apparatus for heating liquids by electrical energy consisting of a liquid container made of insulating material, structures of highly porous material with small interstitial spaces dipping into the liquid in the container, and extending above the liquid level and means for introducing electric current through the liquid contained in the structures.

3. An apparatus for heating liquids by electrical energy consisting of a liquid container made of insulating material, structures with small interstitial spaces dipping into the li uid in the container and extending above t 1e liquid level, a bell placed over the structures with an outlet-pipe, and means for conducting electric current through the liquid contained in the structures.

4. Apparatus for heating liquids by electrical energy, consisting of a liquid container made of insulating material, structures with small interstitial spaces having the form of three-sided frames, the legs of which dip into the liquid, and means for conducting electric current through the liquid contained in the structures.

-5. Apparatus for heating liquids by elec-.

trical energy, consisting of a liquid container" through the liquid contained in the structures.

7. Apparatus for heating liquids by electrical energy, consisting of a liquid container made of insulating material and subdivided into chambers by cross-partitions, structures with small interstitial spaces having the form of three-sided frames with their legs dipping into the liquid of the chambers, a bell placed over the structures with an outlet pipe and means for leading the electric current through the liquid contained in the structures.

8. Apparatus for heating liquids by electrical energy, consisting of a liquid container made of insulating material and subdivided into chambers by cross-partitions, structures with small interstitial spaces having the form of three-sided frames with their legs dipping into the liquid of the chambers, a bell placed over the structures with an outlet pipe, andelectrodes plunging into the liquid outside the bell.

9. An apparatus for heating liquids by electrical energy consisting of a liquid container made of insulating material, structures with small interstitial spaces dipping into the liquid of the container, a feed pipe and a discharge pipe, by means of which the liquid is kept at constant level and means for leading the electric current through the liquid contained in the structures.

In testimony whereof I haveafiixed my signature.

. GUSTAV RAW. 

